package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@Slf4j
@RestController
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);

        //只清理修改的菜品所在种类的数据
        String key="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);

        return  R.success("添加菜品成功");

    }

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page={},pagesize={},name={}",page,pageSize,name);

        //构造分页构造器
        Page<Dish> pageInfo=new Page<>(page,pageSize);
        Page<DishDto>  dishDtoPage=new Page<>();

        //构造条件构造器
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.like(name!=null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records=pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            //根据id查询分类对象
            if(categoryId!=null){
                Category category = categoryService.getById(categoryId);
                dishDto.setCategoryName(category.getName());
            }

            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);

    }

    /**
     * 根据id查菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){
        DishDto dishDto=dishService.getByIdWithFlavor(id);
        return R.success(dishDto);

    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);

        //redis清除所有菜品的数据
        //Set keys = redisTemplate.keys("dish_*");
        //redisTemplate.delete(keys);

        //只清理修改的菜品所在种类的数据
        String key="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);
        return  R.success("修改菜品成功");

    }

    /**
     * 启售、禁售菜品
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> updateStatus(@PathVariable int status,@RequestParam List<Long> ids){
        log.info("status:{}",status);
        log.info("ids:{}",ids);
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.in(ids!=null,Dish::getId,ids);
        List<Dish> dishes=dishService.list(queryWrapper);
        for(Dish dish:dishes){
            dish.setStatus(status);
            dishService.updateById(dish);

        }

        return R.success("菜品状态修改成功");
    }


    /**
     * 批量删除
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        log.info("ids:",ids);
        dishService.deleteByIdsWithFlavor(ids);

        return R.success("删除成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish,String name){
//
//        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
//        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
//        //只显示启售的菜品
//        queryWrapper.eq(Dish::getStatus,1);
//        //根据名称查询
//        queryWrapper.like(name!=null,Dish::getName,name);
//
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//        List<Dish> list=dishService.list(queryWrapper);
//        return R.success(list);
//    }

    /**
     * 根据条件查询对应的菜品数据，前端展示菜品时只用到dish，后端修改套餐时添加菜品会用到name
     * @param dish
     * @param name
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish,String name){
        List<DishDto> dtoList=null;
        String key="dish_"+dish.getCategoryId()+"_"+dish.getStatus();
        //从redis中查询数据
        dtoList= (List<DishDto>) redisTemplate.opsForValue().get(key);

        //如果数据存在，返回数据
        if(dtoList!=null){
            return R.success(dtoList);
        }
        //如果数据不存在，将数据存入redis,return之前

        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        //只显示启售的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //根据名称查询
        queryWrapper.like(name!=null,Dish::getName,name);

        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list=dishService.list(queryWrapper);

        dtoList=list.stream().map((item)->{
            DishDto dishDto=new DishDto();
            BeanUtils.copyProperties(item,dishDto);
            Long dishId=item.getId();
            LambdaQueryWrapper<DishFlavor> queryWrapper1=new LambdaQueryWrapper<>();
            queryWrapper1.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> flavors=dishFlavorService.list(queryWrapper1);
            dishDto.setFlavors(flavors);
            return dishDto;
        }).collect(Collectors.toList());

        //如果数据不存在，将数据存入redis
        redisTemplate.opsForValue().set(key,dtoList,60, TimeUnit.MINUTES);

        return R.success(dtoList);
    }
}
